Woven pile fabric



(Specimens.)

J. DOBSON.

WOVEN PILE FABRIC. I No. 378,577. Patented Feb. 28, 1888.

WITNESSES: INVENTOR N. PETERS. PholuLilhogmpMr. Washinglnn. D. C.

rrrcr'i.

JAMES DOBSON, OFPHILADELPHIA, PENNSYLVANIA,

woven PILE FABRIC.

SPECIFICATION forming part of Letters Patent No. 378,522, dated February 28, 1.888.

' Application filed July 26, 1886. Serial No. 209,049. (Specimens) To all whom it may concern.-

Be it known that I, JAMES DoBsoN, a citizen of the United States, residing in the city of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in lVoven Pile Fabrics, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to pile fabrics such as carpets, and is an improvement in the woven pile fabric for which my application for Letters Patent was filed April 9, 1885, a11d patented November 22, 1887. Said invention consisted of a fabric constructed in such manner that the pile warp-threads are not drawn down between or below the filling-threads, but are secured entirely on the top surface ofthe ground fabric below the top weft-thread, and the upper and lower wefts with an intermediate filling are bound together by a double series of tying-threads passing from top to bottom of the fabric alternately.

My present improvement consists of a fabric in which the two contiguous bottom weftthreads and the tying-in warp-threads are so interwoven that the pile is more securely bound by the upper weft of the ground fabric, so as to more effectually secure the pile-tufts to the ground fabric and prevent them from becoming loose. To this end the carpetis constructed as shown in the accompanying drawings, in which Figure 1 is a plan view of the back or under surface of the carpet. Fig. 2 is a plan View of the top surface of the fabric with some of the pile removed. Fig. 3 is a vertical section of the fabric cut in the direction of its width in a line with the top and bottom weft-threads and transversely to the intermediate fillingthreads and the binding or tying threads. Fig. 4: is a vertical section of the fabric cut in the direction of its length in a line with the intermediate filling-threads and with the binding or tying threads and transversely to the top and bottom weft-threads.

The carpet is composed of two contiguous bottom surface-wefts, a single upper weftthread, one or a pair of intermediate stuffer warp-threads, two contiguous binding or tying warpthreads, and pile-threads. The top weft,

A, and the bottom wefts,'B B, lie 011 opposite sides of the stuffer warp-threads O, and the two binding or tying warpthreads D D lie between each two single or double :filling- 5 threads, 0, while the pile-threads E, woven into the fabric in the direction of its length, lie also in the same line with the tying-in threads D D and between the latter, being bound upon the top of thread 0 by the weft A. This co n- 6o struction forms a compact ground fabric, as

shown in Figs. 2 and 3, with the pile-tufts resting on the surface formed by the series of filling-threads G, and held down to them by the transverse single upper weft, A, and the latter in turn being securely tied to the ground weft-threads by the strands of the two tyingthreads D D. The tying-threads D D are both woven into the fabric in the same manner, and are alternately brought to the top of 7 the fabric to bind down the pile-securing weft A. As shown in Fig. 4, thread D passes over weft B, under and around weft B, then to the top of the fabric between warps O C, over weft A, then down to the bottom surface of the fabric, under and around the next weft B, over the next weft B, and then, instead of being taken to the top of the fabric, passes over the next Weft B and under next weft B, the interweaving thereof being continued in the same man- 8c ner. The thread D is interwoven in the same manner, it passing under a weft when the thread D passes over the latter, and vice versa, and the threads D D alternating in being carried through the fabric to bind the weft E, so that 8 the resulting web is a fabric composed of two contiguous bottom wefts and a single top weft above and lying in the same direction in the web, with an intermediate heavy stuffer or filling-warp, and the whole bound or knotted to- 0 gether by two contiguous binding warp-threads which pass alternately to the upper face of the ground fabric and over the top weft, and which at the back of the fabric pass in opposite directions to each other alternately over and under the two contiguous weft-threads. The pilethreads, which may be either cut, as shown,

or uncut, being held down to the fabric above the filling by the top weft, (which is bound or tied in manner aforesaid to the bottom wefts,) reo therefore lie entirely on the surface proper of the ground fabric, forming therebya high pile,

as well as being securely bound in the complete fabric.

Having thusdescribed my invention, what I claim as new, and desire to secure by Letters 5 Patent, is-

The pile carpet described, consisting of a ground fabric in which the pile is secured ontirely above the filling-threads and upon the top surface proper of the fabric, composed of IO aseries of bottom weft-threads woven in pairs,

a single top surfaceweft to each pair of bottom wefts, intermediate stuffer warp-threads, and a series of tying-in threads interwoven in pairs, which tying-in threads pass alternately to the upper surface of the ground fabric and 15 over the top weft, and which at the back of the fabric pass in opposite directions to each other alternately over and under the two contiguous weft-threads, and pile-threads bound in the fabric below the top weft, between the tying-in 2c threads, and above the filling, substantially as described.

In testimony whereof I have hereunto affixed in y signature this 13th day of July, A. D. 1886.

JAMES DOBSON. Witnesses:

FRANcIs S. BROWN, H. T. FENTON. 

